JPH05155576A - Device for reporting abnormality of escalator - Google Patents

Abstract

PURPOSE:To deal with abnormalities in a short time to restore normal states to maintain safety at an entrance by providing a comparison and discrimination portion at which voltage generated by an impact sensor is compared with a preset reference and abnormality reporting means to which an output of the result of this comparison and discrimination is inputted and which then detects the output as an abnormality signal and reports abnormality. CONSTITUTION:Should a foreign material or the like be caught in the groove 6 of a footstep 5, it collides against the teeth of a comb 2 mating with the groove 6 as the footstep 5 moves. The comb 2 is made of plastic and is broken at the application of excessive forces in view of safety and then vibration caused by this impact is transmitted to a comb plate 3 together with large impact noise and an impulse is generated in an impact sensor 1. Then an output obtained by comparison and amplification of this detection impulse signal at a comparison and discrimination portion 11 which requires outputs of preset reference discrimination is produced and is inputted to abnormality reporting means 12 and thereby a sign of abnormality is given. Thereafter, reset means 13 is controlled during processing and then the abnormality reporting means is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator abnormality notifying device for automatically detecting an abnormality by detecting a comb breakage or a foreign substance, that is, a foreign matter, at an escalator entrance / exit.

[0002]

2. Description of the Related Art In general, an escalator boarding / alighting apparatus is composed of a moving part which is a stepped step and is connected endlessly, a plurality of combs which mesh with the stepping plate of the moving part, and a comb plate fixing part to which the plurality of combs are attached. At the mouth, the tread moves up or down to mesh with the teeth of the comb and the groove forming the surface of the tread along the traveling direction.

Therefore, in the unlikely event that a foreign substance, such as a needle, is caught and excessive force is applied, a comb tooth of a plastic material is generally used so that the comb tooth may be broken for safety.

However, sometimes a needle or the like gets stuck in the groove of the tread, and if it moves and runs as it is, it collides with the comb teeth at the entrance / exit,
The comb is damaged with a violent sound, and at the same time, shock vibration is transmitted to the comb plate.

In such a case, the comb teeth may be broken and the user's shoes or the like may be caught between the damaged parts unless they are replaced promptly. I was looking around to see if there were any missing comb teeth or if there was any contact at the entrance / exit.

However, in general, it is easy to find a defective portion of a comb tooth, and despite the loss, the running is continued without stopping the operation.

In order to solve such a problem, a pressure switch made of a pressure conductive rubber disclosed in Japanese Utility Model Laid-Open No. 59-105271 is conventionally provided to detect an abnormality and stop the operation. A device is provided.

[0008]

SUMMARY OF THE INVENTION Conventionally, as described above,
Abnormalities are often noticed unless the foreign object is clogged with strong noise or vibration other than daily inspection. Therefore, the vehicle is running in a dangerous state due to the loss of the comb teeth, and there is a surface lacking in quick treatment such as replacement of the comb teeth.

In addition, as in the other prior art, when a pressure switch is provided from a pressure conductive rubber to detect an abnormality, the mechanical force applied to the pressure switch shortens the life of the switch. There are still issues to be taken to ensure the safety of users.

The present invention has been made in view of the above point of view, and an object of the present invention is to provide an abnormality notification device for an escalator capable of promptly detecting the occurrence of the abnormality and notifying the occurrence of the abnormality before the degree of the abnormality has significantly progressed. To aim.

[0011]

SUMMARY OF THE INVENTION An escalator abnormality alarming device according to the present invention is a shock detecting device that receives a shock vibration and generates a voltage on a lower surface and a front end of a comb plate on which a plurality of combs facing an entrance / exit are attached. A sensor is provided, and an output discriminating section for comparing and discriminating on the basis of a preset reference by using a voltage generated by this impact as a signal, and an abnormality notifying means using the output discriminated by the comparison as an input.

[0012]

According to the present invention, when the impact detection sensor has a large impact at the breakage entrance / exit of the comb, this is detected as a voltage signal, and this voltage signal is compared and discriminated by the output discriminating unit to make an abnormality. When it occurs, it responds immediately.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a main part of an end surface on the comb plate side in this embodiment. The impact detection sensor 1 having an electrode for extracting a voltage generated by receiving an impact force is provided with a recess 4 on the lower surface of the front end of a comb plate 3 to which a plurality of combs 2 are attached, and the recess 4 is provided on the left and right. ..

Impact detection sensor disposed at the front end of the comb plate This embodiment is shown in the plan top view of FIG. FIG. 4 is a block system diagram of the escalator abnormality notification device according to the present embodiment, which inputs the voltage generated from the impact detection sensor and outputs an abnormality notification signal. A comparison / determination section 11 for comparing the output signals of the amplification circuit 10 with the amplification signal is provided, and a required signal is determined by comparing with a preset reference.

It is formed in the abnormality notifying means 12 which receives the output of the comparison and determination. The abnormality notification means 12 is provided with a reset means 13 for ending the abnormality notification.

According to the above structure, when a foreign substance (needle) or the like is caught in the groove 6 of the tread plate 5 as shown in FIG.
Since the teeth of the comb 2 mesh with each other, the tread plate 5 collides with it as the tread plate 5 moves.

For the sake of safety, the comb 2 is generally made of plastic so that it breaks when an excessive force is applied, and the comb 2 is broken not only by the tip of the tooth but also by the root of the tooth due to impact.

At this time, a shock and a vibration are transmitted to the comb plate 3 along with a large shock sound. Therefore, impulses due to this exciting force are generated in the impact detection sensor 1.

Therefore, the detected impulse signal is compared and amplified by the comparison / determination unit 11 which requires the output of the preset reference determination, and the output is inputted to the abnormality notifying means 12 using this as an input, which is a signal of occurrence of abnormality. Be informed. After that, when the reset means 13 is operated together with the treatment, the abnormality notification ends.

In one embodiment of the present invention, the impact detecting sensor is provided on the lower surface of the comb plate and the front end portion, but the same configuration may be applied to the lower surface of the comb plate and the front center portion. Furthermore, the lower surface of the comb plate is formed into a housing, and a plate-like square
Alternatively, a circular impact / vibration sensor may be incorporated.

In addition to the present embodiment, it can also be obtained as an informing means for incorporating an electric signal from a piezoelectric sensor into an audible alarm to make it abnormal.

[0022]

As described above, according to the present invention, the abnormality at the escalator entrance / exit is promptly notified.
In addition to patrols and patrols, it is possible to deal with abnormal occurrences and recover the current situation in a short time,
Further, safety at the entrance / exit is maintained more than ever before.

[Brief description of drawings]

FIG. 1 is a diagram showing a main part of an end face on a comb plate according to an embodiment of the present invention.

FIG. 2 is a plan view of the present invention having a comb plate and impact detection sensors at both ends.

FIG. 3 is a diagram showing a state in which a foreign substance (needle), that is, a comb tooth is broken.

FIG. 4 is a circuit block system diagram showing a configuration of an apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Impact sensor 2 Comb 3 Comb plate 4 Depression 5 Tread plate 6 Groove 10 Widening circuit 11 Comparison / determination section 12 Abnormality notification means 13 Reset means

Claims (1)

[Claims] 1. A shock detection sensor comprising a comb plate part having a plurality of combs engaging with grooves of a tread plate at the front end of the entrance / exit, a lower surface of the comb plate part, and an electrode for generating a voltage by shock vibration at the front end. Abnormality notifying means for comparing the voltage generated by the shock detecting part and the voltage detected by the shock detecting part with a predetermined reference, and the output of the comparison and judgment as an input to detect and notify this as an abnormal signal. An escalator abnormality notification device comprising: